William g



PATENTED JUNE l1, 1867.

To ALL WnoM. 1T MAY eoNe'EnN.;

i Beit known that I, WILLIAM G. PERKINS, of Weiden in the countygni Galcdonin, in the Strate oflvermontp.

WILLIAM G. PERKINS; OFLWALDEN, VERMONT,

' Lener# Patent No. 65,692, zand-Jung 11,1186?. n l

IMPROVBD 4Bottine SCREEN PoR Boots. WINDoWs, et.

'dilgt 'Stimuli rsfem) la ntlpse glitters atnzl 2mb making gni at tlg: stmt.

have' invented a newmd improved Winding-i Screen, which may -be ,-used for doors, shutters', &; c.;- and I d0 .hereby declare-that the following, taken in connec'tionvith the drawings which cmpany and formy pnrt of this speeiiieaitionf, is a. description of my invention sufieient to enztblethoe skilled in the art to prgtctiseit.

This invention Vrel-etes to that class of winding screens lwhich are madenp of strips or slnts ofrmetal or wood,a,nd which ure so nnited nndnrigttnged :is to be enpnhle ot`l:lei\1g wonndnpon 21, Spindle 0l' drum@ AB it i3 the principal design of this invention to produce n `screen-to ser-ve' as c door for burns, n'nd for similar lise,- though it is 4otherwise applicable, it was s. desdernturn to meke the construetion in nsimple, inartifieinl manner, so as* to have vepeeiztl 'reference to. the n'atnre et" woodfin which', rather thztn in metal, I propose mostly to embody my-inventicm. And :ts lf`proposl'e to mnkeuse of cords or straps :is suspensories, in connection with strips or'slats, my invention has reference to provision for :fntomntically keeping the edges of the strips orslnts ing close contact, under :my chnnges ol' the length ofthe suspensories, end under any chnnges of thc width of the slats c zinsed by swelling or shrinking.

My invention consists in so forming,l therslztts that et" two adjoining edges ot'n'ny two slats, oneshelly be -concnve :md-the other corres ondin l f convex so that the one (its into the other but is left free to n1o'veas.mo.

p g .l 9 v i y herne'cessnry in winding, without disclosing n crack tix-opening between theslnts, and in suspendingslnts so jfornicd upon ropes, wire, cords, straps, chains, Snc., in such mnnner ns to be free to slide or move upon the suspensores, as well es to nieve with them, the lower slet alone being fixed so :is to have nomovement relative to the length of the suspensories.

The drawingshows nn embodiment of my invention, the View being a. vertical section, teken through one of the suspenseries,V the slots and shnft, orwindless, and showing-the frame or casing in elerationbeyond.

a is one of the suspe11sories,b the slntsor strips, e the windlrtss,v which has :Lttziched to it, by' other suitable suspensories, weights for cunterbnlancing the weight of theV entire screen. The weights nml their Snsipenso` ries, nnd means of attachment, are not shown in thedrnwing, als they are siinilnr to other npplinnees wellknown;

'the weights may be concealed.l or boxed np in the catsingif desired. The shits are bored so that.A they cnn be moved freely on the'suspensories, and the lower slet being fixed on't'he suspcnsdries, it is evident that the-edges 'of-all the yslate will be kept in Contact with the ndjneent edges, by .the mere weight pf the tslats, n .nd without any adjustment or manipulation whatever. While in the drawing one edge of each slnt is shown as convex, und' the other edge as concave,'l:othy edges oi` one slet may be concerne, if both edges of the next slat ere convex. To et'ectxally prevent the screen from displacement, the ends of the slats move in grooves -in the frame,'the vdth of"` the grooves being made to correspond to the thicknesstofV the slats.

`I eleimithe winding screen mnd'e up.o`f slats, with edges, as described, when arranged on suspensories as ipeciied. i

WILLIAM G. PFRKINS.

Witnesses:

J. BACROSBY, FRANCIS GoULD. 

